Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical, electrical, and chemical properties.
Copper is a chemical element with the symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity.
Phosphorus Bronze also called as Phos Bronze is an alloy of copper with 3.5 to 10% of tin and a significant Phosphorus content of up to 1%.
Aluminium is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately.
Stainless steel : 276 is a group of ferrous alloys that contain a minimum of approximately 11% chromium, : 3 a composition that prevents the iron.